A golf swing is a complex biomechanical movement, and as such can be significantly effected by problems with the body. Elbow, shoulder, spine, pelvis and leg issues can all have a significant kinematic effect for which you will compensate. Research has shown that golf swing performance can be effected by manual care.
Costa, S. M., Chibana, Y. E., Giavarotti, L., Compagnoni, D. S., Shiono, A. H., Satie, J., & Bracher, E. S. (2009). Effect of spinal manipulative therapy with stretching compared with stretching alone on full-swing performance of golf players: a randomized pilot trial. Journal of chiropractic medicine, 8(4), 165-170.